21 July 2017 | Lakeland, Florida. Christopher Nolan’s Dunkirk, a drama based upon the June 1940 Battle of Dunkirk, is bloody (pardon my language) good film fare. Viewers are treated, courtesy of an IMAX camera mounting on a Supermarine Spitfire, to perhaps the most realistic and stunning simulated aerial combat footage ever recorded and released to the public. One can almost feel g-forces and their effects as Royal Air Force Spitfires tangle with their Luftwaffe Messerschmitt Bf 109, Junkers Ju 87 and Heinkel He 111 adversaries. Furthermore, the naval scenes are very authentic. The acting is superb. However, parents are cautioned because there is violence, although little gore, and some profanity in the dialogue.